<?
$m_shop = 2541486;
$m_orderid = 1234;
$m_amount = '100.00';
$m_curr = 'USD';
$m_desc = base64_encode(stripslashes(htmlspecialchars(strip_tags(('pay')))));
$m_key = 'M9cdLFP52J';

$arHash = array(
    $m_shop,
    $m_orderid,
    $m_amount,
    $m_curr,
    $m_desc,
    $m_key
);
$sign = strtoupper(hash('sha256', implode(":", $arHash)));

?>
<!--<form method="GET" action="//payeer.com/api/merchant/m.php">-->
    <form method="GET" action="./cpayeer/status.php?m.php?">
    <input type="text" name="m_shop" value="<?php echo $m_shop; ?>">
    <input type="text" name="m_orderid" value="<?php echo $m_orderid; ?>">
    <input type="text" name="m_amount" value="<?php echo number_format($m_amount, 2, ".", "") ?>">
    <input type="text" name="m_curr" value="<?php echo $m_curr;?>">
    <input type="text" name="m_desc" value="<?php echo $m_desc;?>">
    <input type="text" name="m_sign" value="<?php echo $sign; ?>">
    <input type="submit" name="m_process" value="send"/> Отправка данных на внутреннию страницу (НЕ РАБОТАЕТ) Код взят из готового файла с образца на сайте
</form>

<form method="GET" action="//payeer.com/api/merchant/m.php">
    <input type="text" name="m_shop" value="<?php echo $m_shop; ?>">
    <input type="text" name="m_orderid" value="<?php echo $m_orderid; ?>">
    <input type="text" name="m_amount" value="<?php echo number_format($m_amount, 2, ".", "") ?>">
    <input type="text" name="m_curr" value="<?php echo $m_curr;?>">
    <input type="text" name="m_desc" value="<?php echo $m_desc;?>">
    <input type="text" name="m_sign" value="<?php echo $sign; ?>">
    <input type="submit" name="m_process" value="send"/> Отправка данных через payeer.com (Работает)
</form>